How to get milliseconds since Unix epoch?
I want to do a bash script that measures the launch time of a browser for that I am using an html which gets the time-stamp on-load in milliseconds using JavaScript.
Unix & Linux
Remove unused packages
I have installed some rpm package on my Fedora 17. Some packages had a lot of dependencies.
I have removed some packages but I forgot remove unused dependencies with yum remove.
How do you do a dry run of rm to see what files will be deleted?
I want to see what files will be deleted when performing an rm in linux. Most commands seem to have a dry run option to show just such information, but I can’t seem to find such an option for rm. Is this even possible?
How can I view diffs or at least older versions of specific files with etckeeper?
So I’m using etckeeper on my machine running Debian 9.1 with KDE and would like to view diffs (or if that isn’t yet implemented: past versions) of specific files. How can I do that?
Delete last line from the file
I use sed to quickly delete lines with specific position as
Difference between 2>&1 > output.log and 2>&1 | tee output.log
I wanted to know the difference between the following two commands
Why and how are some shared libraries runnable, as though they are executables?
On 32-bit Linux systems, invoking this
Open a file given by the result of a command in vim
I find myself doing the following almost every day
Is it possible to find out the hosts in the known_hosts file?
I would like to see what hosts are in my known_hosts file but it doesn’t appear to be human readable. Is it possible to read it?
Using a load balancer instead of Apache to throttle transactions from specific IP’s
I have two Apache instances behind a load balancer that I transfer the requests to, depending on the request type.